140 x 117 mm. Showing a European officer instructing Africans in the use of a drill sowing machine. The caption on the reverse reads '(See Feature Set Intro. No. 456). Drill sowing gives each plant a fair chance; but these machines will only be found on the comparitively few areas where mechanical cultivation is possible without increasing the erosion risk. Maybe, when the land is improved in some years' time, they will be used more'.